Magnetic board with chart and markers

ABSTRACT

A magnetic board having a ferromagnetic chart and permanently magnetized markers. The board comprises a base board having a continuous strip of permanently magnetized material along the circumferential edges thereof and a filler material of nonpermanent magnetic material filling the space intermediate said continuous strip.

United States Patent [191 Friederichs MAGNETIC BOARD WITH CHART ANDMARKERS Inventor: Haas Friederichs, Wiesbaden, Germany Hermann Holtz,Wiesbaden, Germany Filed: Aug. 5, 1971 Appl. No.2 169,416

Assignee:

Foreign Application Priority Data Sept. 24, 1970 Germany ..P 20 47 075.1

US. Cl ..40/l42 A, 35/7 A, 273/136 B, 335/302 Int. Cl. ..G09f 7/02 Fieldof Search ....40/124 A; 35/7 A; 273/136 B; 335/302 1 Feb. 20, 1973 [56]References Cited UNITED STATES PATENTS 3,093,919 6/1963 Holtz ..40/142 A3,156,056 11/1964 3,456,373 v 7/1969 Epton ..40/l42 A X 3,651,592 3/1972McCormick et a1 ..40/142 A 3,659,353 5/1972 D'Agrosa ..35/7 A X PrimaryExaminer-Robert W. Michell Assistant ExaminerL. R. OremlandAttorney-Allison C. Collard [57] ABSTRACT A magnetic board having aferromagnetic chart and permanently magnetized markers. The boardcomprises a base board having a continuous strip of permanentlymagnetized material along the circumferential edges thereof and a fillermaterial of non-permanent magnetic material filling the spaceintermediate said continuous strip.

1 1 Claims, 4 Drawing Figures MAGNETIC BOARD WITH CHART ANI) MARKERS Thepresent invention relates to a magnetic board with a chart and markers.Magnetic boards are known in which the face of the board consistssubstantially of a magnetic board having a stripe-like closely arrangedpole separation with an alternate north-south polarity. This known boardmagnet is generally made of rubber plastic resin based permanentmagnetic material, for instance, material which has an exydic base.

The reverse side of the known magnetic board field is provided with asoft iron sheet material, which serves on the one hand to strengthen thestructure of the board and on the other hand to form a magnetic returnclosing. In this way a better holding force is obtained on the frontface of the magnetic board.

It is also known to mount layers of plastic material on the magneticboard having markings imprinted thereon. Such markings may be maps,screens for graphical representation, organization and review plans,etc. For demonstrating certain proceedings in connection with suchcharts small ferromagnetic markers, possibly having different shapes,can be placed on the board by a magnetic force.

During later development of the known magnetic board, it was desirableto mount whole charts on the board. It was also desirable to mount thevarious charts mentioned above in series on the magnetic board onesuperimposed on the other. Furthermore, markers of various colors anddifferent shapes could be mounted on thesecharts and held therebymagnetic force.

In order to render these charts magnetic it was necessary to make themof ferromagnetic foils. Plastic or paper material had to be mounted onat least one and sometimes both sides of the foil and the chartimprinted thereon. Since, these charts were ferromagnetic in their core,they could be mounted on the magnetic board. It was deemed desirabletomount a plurality of these charts on the magnetic board onesuperimposed on the other. However this proved to be disadvantageousbecause the first chart mounted on the magnetic board weakened themagnetic force of the board so that the markers did not remain inposition. For this purpose the markers were made in form of smallpermanent magnets which were mounted on the charts. v I

However, this also proved to be disadvantageous, particularly in view'ofthe fact that if the markers were placed on the charts before the chartswere placed on the magnetic board the markers had a tendency to moveaway from their designated places because of the stripe-like magnetismof the magnetic board. This movement of the markers corresponds to theopposite poles of the magnetic board and the magnetic markers.

It is therefore an object of the present invention to provide amagneticboard with a chart and magnetic markers which do not have theabove-mentioned disadvantages. With the present invention it ispossibleto place one or a plurality of ferromagnetic charts on themagnetic board without any dislodgement of the per- In order to achievethe objects of the present invention, a magnetic board is providedhaving a ferromagnetic chart and permanently magnetized markers. Theinvention is characterized in that in the range of the circumferentialside edges of a right angled or square base board, a continuous rubberor plastic resin based strip of permanently magnetized material isprovided with a closely arranged pole magnetism. The intermediate spacebetween these permanent magnetic strips is filled with a non-permanentmagnetic filler material which forms an even planewith the strips. Aferromagnetic foil having a one or two sided layer of paper or plastic,-is mounted onto the continuous strip of permanently magnetized materialand serves as the board. On this board, which is permanently magnetized,the permanently magnetized markers are magnetically placed on thedesired places.

In the present invention, the magnetic board contains considerably lesspermanent magnetic material In accordance with a preferred embodiment ofthe present invention, the magnetic board may be made of a sheet metalplate. A continuous strip of rubber or plastic resin based permanentlymagnetic material is mounted around the circumferential edges of thesheet metal plate. The intermediate space may be filled with a layer ofnon-magnetic material, for instance, a fiber,

carton, or plastic layer, in order to obtain an even plane with theremainder of the material on the sheet metal plate. Such a board may becoated-with a light thin film of plastic in order to give it a neatappearance.

It is also possible, in accordance with the present invention, toprovide recesses in the circumferential edges of a rectangular or squareplate made of wood. The rubber or plastic resin based permanent magneticstrip is then inserted into the recess. The recess is such that thepermanent magnetic strip isin the same plane with the remainder of thematerial.

Other objects and features of the present invention will become apparantfrom the following detailed description taken in connection with theaccompanying drawings. It is to be understood, however, that thedrawings are designed for the purposes of illustration only, and not asdefinition of the limits and scope of the invention.

In the drawings, wherein similar reference numerals denote similarelements throughout the several views:

FIG. 1 is a perspective view of the magnetic board of the presentinvention with a ferromagnetic chart and permanently magnetized markers;

FIG. 2 is a cross section of the board of FIG. 1 take along section lineII-II of FIG. 1;

FIG. 3 is a perspective view of a ferromagnetic chart of the presentinvention with permanent magnetic markers; and

FIG. 4 is a cross section through the chart of FIG. 3 taken alongsection line IV-IV of FIG. 3.

Referring to the drawings, the magnetic board 2 is provided with flangededges 1, in accordance with the invention. In the area of thecircumferential edges of the sheet material board 2, a continuous stripof permanently magnetic plastic strip 3 is mounted. This permanentlymagnetic material may be, for instance, a rubber or plastic resin basemagnetic powder, whereby the plastic material may be rolled out orextruded. A.

non-permanent magnetic material 4 is provided in the space between theedges of sheet metal board 2 within the continuous strip of permanentmagnetic material 3 as a filler material. In accordance with theinvention, a ferromagnetic chart 5 is mounted onto the magnetic board,which is indicated by. the phantom lines in FIG. 1. A plurality ofpermanently magnetized markers 6 are mounted on the ferromagnetic chart.

As seen in FIGS. 3 and 4, the ferromagnetic chart 5 consists of a softiron foil 7 having a thin layer 8 of nonpermanent magnetic material,such as a paper or plastic material, on one or both sides thereof. Thepaper or plastic layer 8 may have imprinted thereon predetermined screengraduates 9, or other markings such as charts or maps. The permanentlymagnetized markers 6 are magnetically mounted on the ferromagnetic chart5 as desired.

The particular advantage of the magnetic board of the present inventionconsists substantially in the fact that the chart together with alreadyplaced markers 6, may be magnetically mounted onto the board, andremoved therefrom without the permanently magnetized markers 6 beingdisplaced from their original positions, or being removed from the chartaltogether.

It should be understood that the magnetic board may be made of anon-permanent magnetic material, whereby the permanent magnetic stripalong the circumferential edges of the board may be placed into a recessor groove running along the edges of the board. In this way thepermanent strip is situated on the same plane with the non-permanentmagnetic material.

While only several embodiments of the present invention have been shownand described, it will be obvious to those persons skilled in the artthat many changes and modifications may be made thereunto withoutdeparting from the spirit and scope of the invention.

What is claimed is:

1. A magnetic board which comprises:

a right angled base board;

a continuous'strip of permanent magnetic material having a closelyarranged pole magnetism along .the circumferential side edges of saidright angled base board; w

a non-permanent magnetic filler material filling the space intermediatesaid continuous strip of permanently magnetized material, said fillermaterial forming a continuous plane with said continuous strip ofpermanently magnetized material; a ferromagnetic chart mounted onto saidpermanently magnetized strip; and at least one permanently magnetizedmarker placed as desired on said ferromagnetic chart. 2. The magneticboard as defined in claim 1 wherein said ferromagnetic chart iscomprised of a ferromagnetic foil and a thin layer of non-permanentmagnetic material on at least one side of said ferromagnetic foil,

3. The magnetic board as defined in claim 2, wherein the material ofsaid permanently magnetized strip is comprised of a rubber basedmaterial.

4. The magnetic board as defined in claim 2, wherein the material ofsaid permanently magnetized strip is comprised of a plastic resin basedmaterial.

5. The magnetic board as defined in claim 2, wherein the material ofsaid permanently magnetized strip comprises a permanent magnetic powderon an oxydized base.

6. The magnetic board as defined in claim 2, wherein the thin layer ofnon-permanent magnetic material on said ferromagnetic chart is paper.

7. The magnetic board as defined in claim 2, wherein the thin layer ofnon-permanent magnetic material on said ferromagnetic chart is plastic.

8. The magnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a fibrous material.

9. The magnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a carton material.

10. The magnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a plastic material.

11. A magnetic board which comprises:

a right angled base board of non-permanent magnetic material;

a continuous groove along the circumferential edge of said right angledbase board;

a continuous strip of permanent magnetic material having a closelyarranged pole magnetism inserted into said circumferential continuousgroove, said continuous strip of permanent magnetic material togetherwith said base board forming an even plane,

a ferromagnetic chart mounted onto said permanently magnetized strip;and

at least one permanently magnetized marker placed as desired on saidferromagnetic chart.

1. A magnetic board which comprises: a right angled base board; acontinuous strip of permanent magnetic material having a closelyarranged pole magnetism along the circumferential side edges of saidright angled base board; a non-permanent magnetic filler materialfilling the space intermediate said continuous strip of permanentlymagnetized material, said filler material forming a continuous planewith said continuous strip of permanently magnetized material; aferromagnetic chart mounted onto said permanently magnetized strip; andat least one permanently magnetized marker placed as desired on saidferromagnetic chart.
 2. The magnetic board as defined in claim 1 whereinsaid ferromagnetic chart is comprised of a ferromagnetic foil and a thinlayer of non-permanent magnetic material on at least one side of saidferromagnetic foil.
 3. The magnetic board as defined in claim 2, whereinthe material of said permanently magnetized strip is comprised of arubber based material.
 4. The magnetic board as defined in claim 2,wherein the material of said permanently magnetized strip is comprisedof a plastic resin based material.
 5. The magnetic board as defined inclaim 2, wherein the material of said permanently magnetized stripcomprises a permanent magnetic powder on an oxydized base.
 6. Themagnetic board as defined in claim 2, wherein the thin layer ofnon-permanent magnetic material on said ferromagnetic chart is paper. 7.The magnetic board as defined in claim 2, wherein the thin layer ofnon-permanent magnetic material on said ferromagnetic chart is plastic.8. The magnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a fibrous material.
 9. Themagnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a carton material.
 10. Themagnetic board as defined in claim 2, wherein said non-permanentmagnetic filler material is comprised of a plastic material.